With this add-on you can spawn, tame, and breed penguins. They are tameable and breedable with every type of fish except for pufferfish. They'll attack and kill other animals for you once tamed.
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Changelog
-Attempting To Meet All Of The Requirements, Hopefully It's Enough
I suggest to create naturally spawning igloo structures with penguins and stuff in them, then it would be more cool.
I give it 5 stars ⭐⭐⭐⭐⭐
And I just tried renaming the file and it was successfully imported to my mcpe.